Whakaoti mō x
x=\frac{9\left(y+12\right)}{4}
Whakaoti mō y
y=\frac{4\left(x-27\right)}{9}
Graph
Tohaina
Kua tāruatia ki te papatopenga
4x-3\times 3y=108
Me whakarea ngā taha e rua o te whārite ki te 12, arā, te tauraro pātahi he tino iti rawa te kitea o 3,4.
4x-9y=108
Whakareatia te -3 ki te 3, ka -9.
4x=108+9y
Me tāpiri te 9y ki ngā taha e rua.
4x=9y+108
He hanga arowhānui tō te whārite.
\frac{4x}{4}=\frac{9y+108}{4}
Whakawehea ngā taha e rua ki te 4.
x=\frac{9y+108}{4}
Mā te whakawehe ki te 4 ka wetekia te whakareanga ki te 4.
x=\frac{9y}{4}+27
Whakawehe 108+9y ki te 4.
4x-3\times 3y=108
Me whakarea ngā taha e rua o te whārite ki te 12, arā, te tauraro pātahi he tino iti rawa te kitea o 3,4.
4x-9y=108
Whakareatia te -3 ki te 3, ka -9.
-9y=108-4x
Tangohia te 4x mai i ngā taha e rua.
\frac{-9y}{-9}=\frac{108-4x}{-9}
Whakawehea ngā taha e rua ki te -9.
y=\frac{108-4x}{-9}
Mā te whakawehe ki te -9 ka wetekia te whakareanga ki te -9.
y=\frac{4x}{9}-12
Whakawehe 108-4x ki te -9.
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